package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     * @return
     */
    @Override
    public Result save(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employeeMapper.save(employee);

        return Result.success();
    }

    /**
     * 分页查询员工
     * @param pageQueryDTO
     * @return
     */
    @Override
    public Result<PageResult> page(EmployeePageQueryDTO pageQueryDTO) {

        PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());


        Employee employee = Employee.builder().name(pageQueryDTO.getName()).build();

        List<Employee> list = employeeMapper.selectByCondition(employee);

        PageInfo<Employee> pageInfo = new PageInfo<>(list);

        PageResult pageResult = new PageResult();
        pageResult.setTotal(pageInfo.getTotal());
        pageResult.setRecords(pageInfo.getList());

        return Result.success(pageResult);
    }

    /**
     * 根据员工id修改状态
     * @param id
     * @param status
     * @return
     */
    @Override
    public Result status(Long id, Integer status) {

        if(id == 1){
            return Result.error("管理员不可修改");
        }
        if(status ==0 ||status ==1){
            Employee employee = Employee.builder().id(id).status(status).build();
            employeeMapper.update(employee);
            return Result.success();
        }
        return Result.error("状态码1错误");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Result<Employee> getById(Long id) {
        Employee employee = Employee.builder().id(id).build();
        List<Employee> list = employeeMapper.selectByCondition(employee);
        Employee info = list.get(0);
        info.setPassword("*****");
        return Result.success(info);
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     * @return
     */
    @Override
    public Result update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employeeMapper.update(employee);
        return Result.success();
    }



}
